论文标题
贝叶斯对宇宙二元性场景的比较
Bayesian Comparison of the Cosmic Duality Scenarios
论文作者
论文摘要
宇宙距离双重性关系（CDDR），$ d _ {\ rm l}（1+z）^{ - 2}/d _ {\ rm a} = 1 $，带有$ d _ {\ rm lm l} $和$ d _ {\ rm lm l} $ and $ d _ {\ rm a} $，是cr cr and cr and cruc and and and crul uncials an unuciality and Angultiase a lumineter an宇宙学场景。许多研究试图通过观察方法测试CDDR，甚至其中一些也考虑了变形的CDDR，即$η=η（z）$。在本文中，我们使用IA型超新星光度距离和星系簇测量（它们的角直径距离和气体质量分数），以在$η（z）$函数之间进行贝叶斯模型比较。我们表明，这里使用的数据无法确定，并具有高度的贝叶斯证据，其中$η（z）$函数最能捕获CDDR的演变。
The cosmic distance duality relation (CDDR), $D_{\rm L}(1+z)^{-2}/D_{\rm A}=η=1$, with $D_{\rm L}$ and $D_{\rm A}$, being the luminosity and angular diameter distances, respectively, is a crucial premise in cosmological scenarios. Many investigations try to test CDDR through observational approaches, even some of these ones also consider a deformed CDDR, i.e., $η=η(z)$. In this paper, we use type Ia supernovae luminosity distances and galaxy cluster measurements (their angular diameter distances and gas mass fractions) in order to perform a Bayesian model comparison between $ η(z) $ functions. We show that the data here used are unable to pinpoint, with a high degree of Bayesian evidence, which $η(z)$ function best captures the evolution of CDDR.
